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Google Enhances NotebookLM with Custom Audio Overviews

9/3/2025

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Summary

Story summary

Google updated its AI note-taking assistant, NotebookLM, enabling customization of Audio Overviews in four formats: “Deep Dive,” “Brief,” “Critique,” and “Debate.”
Each format provides a distinct method for summarizing documents, improving user experience.
New voice options for podcasts and standalone apps for Android and iOS were introduced.
The update will be globally available within the week.

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Story summary

Google updated its AI note-taking assistant, NotebookLM, enabling customization of Audio Overviews in four formats: “Deep Dive,” “Brief,” “Critique,” and “Debate.”
Each format provides a distinct method for summarizing documents, improving user experience.
New voice options for podcasts and standalone apps for Android and iOS were introduced.
The update will be globally available within the week.